Clinical and genetic familial study of a large cohort of Italian children with idiopathic epilepsy

Romina Combi, Daniele Grioni, Margherita Contri, Serena Redaelli, Francesca Redaelli, Maria Teresa Bassi, Donatella Barisani, Maria Luisa Lavitrano, Giovanni Tredici, Maria Luisa Tenchini, Mario Bertolini, Leda Dalprà

Research output: Contribution to journalArticle

Abstract

Epilepsies are characterized by genetic heterogeneity and by the possible coexistence of different phenotypes in one family. Moreover, in different epilepsies, mutations in the same gene have been reported. We aimed to collect data in a large Italian cohort of 81 families with children affected by partial or generalized epilepsies and to evaluate the prevalence of several ion channel mutations. In particular, a clinical and genetic survey was performed and DNA regions known to be associated with several epilepsies were analysed by sequencing. We observed genetic complexity in all phenotype groups: any epileptic type may be transmitted as either autosomal dominant or recessive. No significant phenotype identity among generations and no differences among genders could be observed. Two missense mutations in SCN1A were identified in two GEFS+ probands confirming the importance of this channel for this epilepsy. Moreover, a previously unreported CLCN2 mutation was detected in a proband showing CAE. In conclusion, even in this highly heterogeneous cohort, the complexity of the epileptic condition was highlighted and mutations in the analysed candidate region of ion channel genes appear to explain only a minority of cases.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
JournalBrain Research Bulletin
Volume79
Issue number2
DOIs
Publication statusPublished - Apr 29 2009

Keywords

  • Cohort
  • Epilepsy
  • Genetics
  • Ion channels
  • Mutation

ASJC Scopus subject areas

  • Neuroscience(all)

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    Combi, R., Grioni, D., Contri, M., Redaelli, S., Redaelli, F., Bassi, M. T., Barisani, D., Lavitrano, M. L., Tredici, G., Tenchini, M. L., Bertolini, M., & Dalprà, L. (2009). Clinical and genetic familial study of a large cohort of Italian children with idiopathic epilepsy. Brain Research Bulletin, 79(2), 89-96. https://doi.org/10.1016/j.brainresbull.2009.01.008